Resources & Reserves

The following table shows the gold and silver Mineral Resources and Mineral Reserves at December 31, 2018. Mineral Resources are not Mineral Reserves and do not have demonstrated economic viability. There is no certainty that all or any part of the Mineral Resources will be converted into Mineral Reserves.

Mineral Reserves and Mineral Resources1

Project Category Tonnes
(millions)
Au
Grade
(g/t)
Contained
Au
Ounces
(000s)
Ag
Grade
(g/t)
Contained
Ag
Ounces
(000s)
El Castillo(2) Proven 2.9 0.58 54

El Castillo(2) Probable 25.3 0.39 314

San Agustin(2) Probable 57.9 0.33 614 10.2 20,202
El Castillo Complex(2) Proven & Probable 86.1 0.35 982 10.2 20,202
La Colorada(3) Probable 14.0 0.68 306 12.2 5,524
Magino(4) Proven 24.2 1.03 804

Magino(4) Probable 34.7 1.19 1,332

Consolidated Mineral Reserves Proven & Probable 159.1 0.67 3,424
25,726
El Castillo(5) Measured 3.4 0.55 61

El Castillo(5) Indicated 41.8 0.37 490

San Agustin(5) Indicated 83.1 0.29 781 9.6 25,678
El Castillo Complex(5) Measured & Indicated 128.3 0.32 1,332
25,678
La Colorada(6) Indicated 27.2 0.65 625 10.0 10,068
Magino(7) Measured 37.4 0.84 1,010

Magino(7) Indicated 106.6 0.93 3,187

San Antonio(8) Measured 19.0 0.91 553

San Antonio(8) Indicated 46.1 0.80 1,182

Consolidated Mineral Resources Measured & Indicated 364.6 0.67 7,889
35,746
El Castillo(5) Inferred 0.9 0.36 10

San Agustin(5) Inferred 3.9 0.37 46 7.8 965
El Castillo Complex(5) Inferred 4.8 0.37 56
965
La Colorada(6) Inferred 1.5 0.89 46 11.5 641
Magino(7) Inferred 33.2 0.83 886

San Antonio(8) Inferred 6.2 0.34 67

Consolidated Mineral Resources Inferred 45.7 0.72 1,055
1,606

(1) Mineral Resources are presented inclusive of Mineral Reserves. Numbers may not sum due to rounding.

(2) The Mineral Reserves for El Castillo and San Agustin, which together form the El Castillo Complex, set out in the above table were taken from the El Castillo Complex Technical Report, including depletion through mining activities and changes to recovery and cost assumptions from July 1, 2017 to December 31, 2018, are valid as of December 31, 2018 and used a gold price of $1,200 per ounce and silver price of $14 per ounce. Cut-off grades, depending on rock and ore type, varied from 0.14 g/t AuEq for oxide to 0.57 g/t Au for silicified sulphide.

(3) The Mineral Reserves for La Colorada set out in the above table were taken from the La Colorada Technical Report, including depletion from July 1, 2017 to December 31, 2018 through mining activities, are valid as of December 1, 2018 and used a gold price of $1,200 per ounce and silver price of $14 per ounce. Cut-off grades, depending on deposit, varied from 0.12 g/t AuEq to 0.14 g/t AuEq.

(4) The Mineral Reserves for Magino set out in the table above were taken from the Magino Technical Report. The Mineral Reserve was estimated at a gold price of $1,200 per ounce. The Mineral Reserve used a gold cutoff of 0.41 g/t.

(5) The M&I Mineral Resources and Inferred Mineral Resources for El Castillo and San Agustin, which together form the El Castillo Complex, set out in the above table were taken from the El Castillo Complex Technical Report, including depletion through mining activities and changes to recovery and cost assumptions from July 1, 2017 to December 31, 2018, are valid as of December 31, 2018 and used a gold price of $1,400 per ounce and silver price of $17 per ounce. Cut-off grades, depending on rock and ore type, varied from 0.10 g/t AuEq for oxide to 0.47 g/t Au for silicified sulphide.

(6) The M&I Resource and Inferred Resource for La Colorada set out in the above table were taken from the La Colorada Technical Report, including depletion through mining activities from July 1, 2017 to December 31, 2018, are valid as of December 31, 2018 and used a gold price of $1,400 per ounce and silver price of $17 per ounce. Cut-off grades, depending on deposit, varied from 0.09 g/t AuEq to 0.12 g/t AuEq.

(7) The M&I Mineral Resources and Inferred Mineral Resource for the Magino Project set out in the table above were taken from the Magino Technical Report. The Mineral Resource was estimated at a gold price of $1,300 per ounce. The Mineral Resource used a gold cutoff of 0.25 g/t.

(8) The Mineral Resources for the San Antonio Project set out in the table above were taken from the San Antonio Technical Report. The gold resource was estimated at a gold price of $1,500 per ounce using a cutoff grade of 0.11 g/t Au for oxide and transition and 0.15 g/t Au for sulphide.